Why it is dangerous to add water to acid?

Answer 1

The water will react with the acid and cause it to foam and splatter. And most likely you will be so close that some could land on your skin and cause a serious and dangerous chemical burn.

Answer 2

It is for safety reasons. Acid reacts violently with water, so it is better to put a small amount of acid into water slowly. If you added water to a beaker of acid, it would quickly consume the water explosively.

A:

If you add water to concentrated acid, it can bubble or spatter and give you a nasty burn. If you add acid to water, there is less chance of a vigorous reaction.

The best way to remember it is this: It's much better to be splashed by water containing a little acid than to be splashed with acid containing a little water.
Adding acid to water wouldn't have any effect on the H+ ions, per se, because the ions are already in either the water or the acid to start with.

Answer 3

when mixing acid & water due to the tremendous evolution of heat (as the ionization is highly exothermic) that can cause violent reactions always acid should be added to water. One should always add the acid to the water rather than the water to the acid. Because the reaction is in an equilibrium that favors the rapid protonation of water, addition of acid to the water ensures that the acid is the limiting reagent.

Answer 4

Addition of water to a strong acid is frequently associated with the release of heat. This can cause the acid/water to boil and splash you.

You should always add acid to water, not water to acid. That means fill the water in the beaker/test tube/flask first and then add the acid.

Mixing the chemicals the other way can present a lab safety hazard.

Sulfuric acid (H2SO4) reacts vigorously with water. It is a highly exothermic reaction. Adding water to concentrated sulfuric acid can cause it can boil and spit and you may get a nasty acid burn.

If you pour water on the acid, the reaction occurs on top of the liquid.

If you add acid to the water, it sinks and any wild reaction has to get through the water or beaker to get to you.

Answer 5

Say you have a beaker of acid and you pour water into it and slip. The splash up would be mostly acid and you could be burned. Now, pour acid into water and have a bad pour and mostly water splashes up and you are splashed with water mostly.

This isn't strictly a matter of "slipping" or not. Dissolving strong acids in water is usually exothermic - that is, it gives off heat. If you add a little water to a lot of, say, concentrated sulfuric acid, it can actually heat the water droplet so much that it boils, and now you have boiling slightly diluted sulfuric acid sputtering in your face. Pouring acid (slowly) into water limits the amount of heat generated.

Do dilutions like you oughta - pour the acid in the water.

Answer 6

To dissolve a soluble dehydrated acid (in the form of granules or powder) or dilute a concentrated acid into lower molarity acid solution is a highly exothermic reaction. If water is added to acid, most likely it would boil and spit some acid onto the skin resulting in a burnt skin.

Answer 7

Because you would run a risk of splashing the acid out of it's container and burning yourself.

Answer 8

Because either it will reach and change the acid or it will dilute the acid

Answer 9

The reaction will be very exothermic (producing heat) and the concentrated acid can boil over, causing injury. Always add acid to water, not the other way around.